riscv: Simplify xip and !xip kernel address conversion macros

To simplify the kernel address conversion code, make the same definition of
kernel_mapping_pa_to_va and kernel_mapping_va_to_pa compatible for both xip
and !xip kernel by defining XIP_OFFSET to 0 in !xip kernel.

Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
Reviewed-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>

diff --git a/arch/riscv/include/asm/page.h b/arch/riscv/include/asm/page.h
index 6a7761c..6e004d8 100644 (file)
--- a/arch/riscv/include/asm/page.h
+++ b/arch/riscv/include/asm/page.h
@@ -93,9 +93,7 @@ extern unsigned long va_pa_offset;
 #ifdef CONFIG_64BIT
 extern unsigned long va_kernel_pa_offset;
 #endif
-#ifdef CONFIG_XIP_KERNEL
 extern unsigned long va_kernel_xip_pa_offset;
-#endif
 extern unsigned long pfn_base;
 #define ARCH_PFN_OFFSET                (pfn_base)
 #else
@@ -103,6 +101,7 @@ extern unsigned long pfn_base;
 #ifdef CONFIG_64BIT
 #define va_kernel_pa_offset    0
 #endif
+#define va_kernel_xip_pa_offset 0
 #define ARCH_PFN_OFFSET                (PAGE_OFFSET >> PAGE_SHIFT)
 #endif /* CONFIG_MMU */
 
@@ -110,29 +109,22 @@ extern unsigned long kernel_virt_addr;
 
 #ifdef CONFIG_64BIT
 #define linear_mapping_pa_to_va(x)     ((void *)((unsigned long)(x) + va_pa_offset))
-#ifdef CONFIG_XIP_KERNEL
 #define kernel_mapping_pa_to_va(y)     ({                                              \
        unsigned long _y = y;                                                           \
        (_y >= CONFIG_PHYS_RAM_BASE) ?                                                  \
                (void *)((unsigned long)(_y) + va_kernel_pa_offset + XIP_OFFSET) :      \
                (void *)((unsigned long)(_y) + va_kernel_xip_pa_offset);                \
        })
-#else
-#define kernel_mapping_pa_to_va(x)     ((void *)((unsigned long)(x) + va_kernel_pa_offset))
-#endif
 #define __pa_to_va_nodebug(x)          linear_mapping_pa_to_va(x)
 
 #define linear_mapping_va_to_pa(x)     ((unsigned long)(x) - va_pa_offset)
-#ifdef CONFIG_XIP_KERNEL
 #define kernel_mapping_va_to_pa(y) ({                                          \
        unsigned long _y = y;                                                   \
        (_y < kernel_virt_addr + XIP_OFFSET) ?                                  \
                ((unsigned long)(_y) - va_kernel_xip_pa_offset) :               \
                ((unsigned long)(_y) - va_kernel_pa_offset - XIP_OFFSET);       \
        })
-#else
-#define kernel_mapping_va_to_pa(x)     ((unsigned long)(x) - va_kernel_pa_offset)
-#endif
+
 #define __va_to_pa_nodebug(x)  ({                                              \
        unsigned long _x = x;                                                   \
        (_x < kernel_virt_addr) ?                                               \
@@ -141,7 +133,7 @@ extern unsigned long kernel_virt_addr;
 #else
 #define __pa_to_va_nodebug(x)  ((void *)((unsigned long) (x) + va_pa_offset))
 #define __va_to_pa_nodebug(x)  ((unsigned long)(x) - va_pa_offset)
-#endif
+#endif /* CONFIG_64BIT */
 
 #ifdef CONFIG_DEBUG_VIRTUAL
 extern phys_addr_t __virt_to_phys(unsigned long x);

diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h
index 9469f46..0344c06 100644 (file)
--- a/arch/riscv/include/asm/pgtable.h
+++ b/arch/riscv/include/asm/pgtable.h
@@ -77,6 +77,8 @@
 
 #ifdef CONFIG_XIP_KERNEL
 #define XIP_OFFSET             SZ_8M
+#else
+#define XIP_OFFSET             0
 #endif
 
 #ifndef __ASSEMBLY__